Mathematics · Inverse Trigonometric Functions
-2π5 is the principal value of which of the following expressions?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1sec-1[sec(7π5)]
- 2cos-1[cos(7π5)]
- 3tan-1[tan(7π5)]
- 4sin-1[sin(7π5)]✓
Correct answer
sin-1[sin(7π5)]
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